chore(deps): update dependency @semantic-release/git to v8

Author: renovate-bot

package-lock.json

@@ -43,7 +43,7 @@
     "@commitlint/cli": "8.3.4",
     "@commitlint/config-conventional": "8.3.4",
     "@semantic-release/changelog": "3.0.6",
-    "@semantic-release/git": "7.0.18",
+    "@semantic-release/git": "8.0.0",
     "@semantic-release/github": "5.5.5",
     "@semantic-release/npm": "5.3.5",
     "acorn": "7.1.0",